just clicking sound when trying to start, and you have good connections and power, means you need to replace the starter motor
Sounds like the battery is dead or you have a loose/dirty battery connection. Have the charging system and battery tested at your local auto parts store.
Corroded, loose, or defective battery cables.
Low battery.
Battery
What type of truck is this?
Check for fuel, spark, compression
A bad connection. Check the battery cables and make sure they are clean and tight. Check the wires on the starter too. Also check all the grounds/ ground wires
Pump, or weak connection in the wiring.
1) Starter relay near battery.2) bad ground connection.3) dirty battery cables or connections. A click is a indication of a limitation of current flow.
Look for a loose or corroded battery cable connection or a faulty starter solenoid/relay switch.
What?? Have a click? Holler, why would you have a click nowadays?!
The speedometer and odometer are electrically operated. There is no mechanical connection to the drivetrain. If there is no power, they don't work.